<template>
<div>

<el-container class="home-container">
  <!-- 头部 -->
  <el-header>
    <div>
      <img src="../assets/logo.png" alt="">
      <span>电商后台管理系统</span>
    </div>
      <el-button type="info" @click="logout">退出</el-button>
  </el-header>
  <!-- 主体内容 -->
  <el-container>
    <!-- 侧边栏 -->
    <el-aside :width="isCollapse ? '64px' : '200px'">
      <div class="toggle-button" @click="toggleCollapse">|||</div>
      <el-menu
      background-color="#333744"
      text-color="#fff"
      active-text-color="#409EFF"
      unique-opened
      :collapse="isCollapse"
      :collapse-transition="false"
      router
      :default-active='activePath'>
      <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
        <template slot="title">
          <i :class="iconsObj[item.id]" class="iconfont"></i>
          <span>{{item.authName}}</span>
        </template>
        <!--* 二级菜单 -->
        <el-menu-item :index="'/' + subItem.path" 
        v-for="subItem in item.children" 
        :key="subItem.id"
        @click="saveNavstate('/' + subItem.path)">
        <template slot="title">
          <i class="el-icon-menu"></i>
          <span>{{subItem.authName}}</span>
        </template>
        </el-menu-item>
      </el-submenu>

    </el-menu>
    </el-aside>
    <!-- 右侧内容主体 -->
    <el-main>
      <router-view></router-view>
    </el-main>
  </el-container>
</el-container>
</div>
</template>

<script>
export default {
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  data() {
    return {
      menulist:[],
      iconsObj:{
        '125': 'iconfont icon-user',
        '103': 'iconfont icon-tijikongjian',
        '101': 'iconfont icon-shangpin',
        '102': 'iconfont icon-danju',
        '145': 'iconfont icon-baobiao'
      },
      isCollapse:false,
      activePath:''
    }
  },
  methods: {
    logout(){
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList(){
      const {data:res} = await this.$http.get('menus')
      if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
    },
    toggleCollapse(){
        this.isCollapse = !this.isCollapse
    },
    saveNavstate(activePath){
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath = activePath
    }
  },
}
</script>

<style lang="less" scoped>
.home-container{
  height: 100vh;
}

.el-header{
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  >div{
    display: flex;
    align-items: center;
  }
  img{
    width: 50px;
  }
}

.el-aside{
  background-color: #333744;
  .el-menu{
    border-right: none;
  }
}
.el-main{
  background-color: #eaedf1;
}
.iconfont{
  margin-right: 10px;
}
.toggle-button{
  text-align: center;
  color: #fff;
  background-color: #4a5064;
  line-height: 24px;
  letter-spacing: 0.2em;
  cursor: pointer;
  font-size: 10px;
}
</style>